Strange that You was unable to open these links.
Ah one more thing, there is also one more reason why modern ammunition don't deflect from modern armor, this is because modern armors are multiple layers of different materials, these layers are not especially thick, for example the most outer layer, or what we see on Leopard 2 or M1 series is max 40-50mm thick, then there is small airgap and another layers of composite armor. Of course this will slightly vary from one design to another but, general concept is the same.
To be honest I actually seen Leopard 2 composite armor, but... please do not ask for photos, I do not have them anymore.
Also the wedge on newer Leopard 2's, is actually a thin screen of NERA type armor, there are approx 3 layers of NERA in that wedge + another single or double layer behind. Such armor is designed to be penetrated, because it's working mechanism is same as for all types of dynamic protection, it need to be penetrated to defeat projectile by inducting a yaw, increase erosion, change it's penetration path etc.
In fact we actually can't talk about passive protection of modern MBT's, all of them just use different types of dynamic protection, be it multilayer composite armor, that in most cases have a structure similiar to NERA, but seems to use more materials and is more complex in design. Addon NERA modules, ERA or NxRA.
So as I said, the general concept is to let penetrator or shaped charge jet get inside armor structure, so the armor can... well the simplest words are... destroy enemy projectile.
